Producer Price Index for paperboard other than corrugated paperboard in sheets and rolls, a WPU0914 series distinct from WPU091405 (Corrugated Paperboard in Sheets and Rolls, Lined and Unlined). The component WPU09141107 (Unbleached Kraft Packaging and Industrial Converting Paperboard) is listed separately.
Paste straight into Excel, Google Sheets or an email. Spreadsheet format lands as two columns.
| Month | Value | Change m/m |
|---|---|---|
| Sep 2026 | +1.4% | |
| Aug 2026 | +2.8% | |
| Jul 2026 | +0.8% | |
| Jun 2026 | +0.2% | |
| May 2026 | +1.9% | |
| Apr 2026 | −0.3% | |
| Mar 2026 | −0.1% | |
| Feb 2026 | −0.7% | |
| Jan 2026 | +0.1% | |
| Dec 2025 | +0.0% | |
| Nov 2025 | −0.2% | |
| Oct 2025 | +0.9% | |
| Sep 2025 | −0.1% |
Same numbers as the chart, straight from BLS. Dates are the first of each period, the way BLS reports them.
Paperboard rose 6.8% over the last 12 months, but 1 of its main inputs rose faster: corrugated recyclable paper +18.4%. That cost pressure may still pass through to prices.
Pulp, paper, and allied productsPulp, paper, and prod., ex. bldg. paperPaperboard
Sources: WPU091411 (Paperboard, Excluding Corrugated Paperboard in Sheets and Rolls); BLS WPU0911.
Since 2016, this index has followed the wood pulp price index about one month later and moved about a third as far as it over a year.
Over the 12 months to Sep 2026, the wood pulp price index rose 0.3% and this index rose 6.8%.
A starting point citing this series by name and code. Replace the bracketed terms with your contract's actual scope before use.
The [affected portion] of the Contract Price shall be adjusted using US PPI — Paperboard, Excluding Corrugated Paperboard in Sheets and Rolls (BLS series WPU091411), published by BLS. Base Period: the index value published for September 2026 (or the month of contract signing, if different) is the Base Value. Adjustment: at each Adjustment Date, the Current Value is the most recently published three-month average of the index (the Averaging Window). The Escalation Factor equals Current Value divided by Base Value. Cap: the Escalation Factor applied under this clause shall not exceed 1.10 or fall below 0.90 (a 10% cap and floor) in any single Adjustment Date, regardless of the index's actual movement. [Replace bracketed terms with your contract's actual affected-portion definition and adjustment-date schedule before use. This is a drafting starting point, not legal advice.]
Folding carton and consumer packaging supply contracts name this series when the board is not corrugated. It is the broader board group, so a contract that buys one grade should check whether a narrower series in the same family fits better.
Divide the current value of BLS series WPU091411 (Paperboard, Excluding Corrugated Paperboard in Sheets and Rolls) by its value at contract signing, then apply that ratio to the paperboard part of the price. A usable clause also names an averaging window, a rule for revised values and missing months, and a cap.
Escalake tracks US PPI — Paperboard, Excluding Corrugated Paperboard in Sheets and Rolls, applies your formula, and gives both sides a number they can confirm, no spreadsheet required.